The Astra Modulation Machine is a flagship, no-compromise guitar effect pedal that establishes a benchmark for classic modulation effects, with sonic authenticity far beyond all other stompboxes. The Astra Modulation Machine features 3 legendary effects, Stereo/Dual Mono operation, True Bypass with Silent Switching, an optional Buffered Bypass via software, Analog Dry-Through, and a Preset Mode to recall stored settings.

Chorus Brigade

Based on the classic CE-1, the Chorus Brigade tone emulates every inch of this legendary pedal, expertly capturing its legendary bucket-brigade circuit.

Flanger/DBLR

Perfectly emulates the prized MXR studio flanger's colorful, almost lo-fi-sounding "bucket-brigade" circuit - offering subtle thickening to whacked-out sci-fi effects.

Trem 65

Captures the balanced, warm tones of classic Fender blackface opto tube tremolo (called "Vibrato" on the amp).

Bonus X90 Phaser & Dharma Trem 61 effects

Based on the classic MXR "script" and "block" Phase 90 effects, plus a unique "Dharma" Dynamic Harmonic Tremolo tone - available free at pedal registration.

Features:

- Chorus Brigade Chorus & Vibrato modes
- Flanger / DBLR - Flanging & Doubling mode
- Trem 65 - Sine & Square modes
- Knob, Preset, and Tap + Preset modes
- True / Buffered Bypass
- FREE Phaser X90 and Dharma Trem 61 bonus effects at registration
- Unmatched sonic authenticity
- Rugged UA build quality
- True Bypass with Silent Switching
- Optional Buffered Bypass… read more
- Preset mode
- Configurable footswitch operation (Starlight and Astra models)
- Optional Preamp coloration on select effects
- UAFX Control mobile app for iOS and Android expands your options, allowing you to switch bypass routing for effect trails and access additional footswitch modes for Starlight and Astra
- UAFX desktop app for macOS/Windows lets you update pedal firmware


Hear Universal Audio's pedals in action in our live demo:

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